Liquid phase sintering of MgTiO3-CaTiO3 microwave dielectric ceramics

被引：83

作者：

Huang, CL ^{[1
]}

Pan, CL ^{[1
]}

Shium, SJ ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 78卷 / 01期

关键词：

MgTiO3-CaTiO3; dielectric properties; liquid phase sintering; CuO;

D O I：

10.1016/S0254-0584(02)00311-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of CuO additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3-CaTiO3 ceramics were investigated. The sintering temperature of CuO-doped 0.95MgTiO(3)-0.05CaTiO(3) (95MCT) ceramics can be lowered to 1275 degreesC due to the liquid phase effect. The microwave dielectric properties are found strongly correlate with the sintering temperature as well as the amount of CuO addition. At 1275 degreesC, 0.95MgTiO(3)-0.05CaTiO(3) ceramics with 0.25 wt.% CuO addition possesses a dielectric constant epsilon(r) of 20, a Q x f value of 51 000 (at 7 GHz) and a tau (f) value of -8.3 ppm degreesC(-1). By appropriately adjusting the x value in the (1 - x)MgTiO3-xCaTiO(3) ceramic system, zero tau (f) value can be obtained. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：111 / 115

页数：5

共 9 条

[1] MAGNESIUM TITANATE MICROWAVE DIELECTRIC CERAMICS [J].